Cycles & Processes
Ecosystems & Populations
Earth Systems & Climate
Resources & Pollution
Policy & Sustainablity
100

Plants release water vapor through small openings in their leaves during this process.

Transpiration

100

These organisms make their own food and form the first trophic level.

producers/autotrophs

100

The solid outer part of Earth, including the crust and uppermost mantle. What is this sphere called?

Lithosphere

100

Solar, wind, hydroelectric, geothermal, and biomass are examples of this type of resource.

Renewable Resource

100

This means meeting present needs without preventing future generations from meeting their needs.

Sustainability

200

This process uses carbon dioxide, water, and light energy to make glucose and oxygen.

Photosynthesis

200

This is the maximum population size an environment can support.

carrying capacity

200

These gases absorb and re-release heat, helping keep Earth warm.

Greenhouse Gases

200

This increases when roads, parking lots, and buildings prevent water from soaking into the ground.

Runoff

200

This federal agency sets and enforces environmental standards across the country.

EPA

300

This nitrogen cycle process is carried out mainly by bacteria and changes nitrogen gas into usable nitrogen compounds.

Nitrogen Fixation
300

Sea otters are considered this because they have a major effect on the stability of a kelp forest ecosystem.

keystone species

300

Heat moves from a hot object to a cooler object through direct contact, like when a metal spoon gets warm in a bowl of soup.

Conduction

300

Pollution that comes from many places, such as oil, fertilizer, and trash washing off streets after rain.

non-point pollution

300

This law helps clean up hazardous waste sites and can hold polluters responsible.

Superfund Act

400

This process returns nitrates to the atmosphere as nitrogen gas.

Denitrification

400

Disease, competition, and limited food are examples of this type of limiting factor because their effects depend on population size.

density-dependent limiting factors

400

This happened mainly because CFCs released chlorine atoms in the stratosphere

Ozone Depletion

400

This happens when toxins build up in an organism’s body over time.

bioaccumulation

400

This occurs when individuals overuse a shared resource for personal benefit, harming everyone in the long run.

Tragedy of the Commons

500

In a pond, fertilizer runoff causes rapid algae growth. After the algae die, bacteria break them down and dissolved oxygen decreases. This process is called what?

Eutrophication

500

Genetic differences passed from parents to offspring can help some organisms survive and reproduce more successfully.

Natural Selection

500

When carbon dioxide dissolves into ocean water and lowers pH, this process occurs.

ocean acidification

500

Modern landfills use clay and plastic liners mainly to protect this resource from polluted liquid.

Groundwater

500

Name three international environmental agreements we talked about

The main ones were CITES, the Basel Convention, and the Montreal Protocol

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